摘要
水泥的水化是一个复杂的变化过程,很难建立起一套直接用于描述水泥水化完整过程的动力学模型。依据水泥水化过程特点及化学反应动力学原理,明确了成核与产物生长、界面化学反应及扩散控制反应三种基本动力学方式对水泥水化的控制作用过程及转换条件,建立了水泥水化动力学模型。该模型能够直接依据水泥水化程度随时间的变化曲线确定水泥颗粒的水化速度,或在已知有关颗粒水化速度的基础上测算水泥在不同时间的水化程度。与其它模型相比,所建模型更加直观和准确。应用结果表明,提出的理论及方法具有良好的适用性和准确性。
According to characteristics of the hydration process of cements and the mechanism of interaction kinetics,the process of cement hydration governed by nucleation and growth interaction,phase-boundary interaction,and diffusion interaction are determined,and transformation conditions of kinetic forms are established.Hydration kinetic models are developed,which can be sued to analyze and calculate the rate constants by using testing curve of hydration degree and time in a direct way.Application results proved that the theory and methods is suitable and have good precision.
出处
《钻井液与完井液》
CAS
北大核心
2006年第3期27-30,共4页
Drilling Fluid & Completion Fluid
